I’ve been drinking more water to help prevent a reoccurrence of kidney stones. It helps to keep the kidneys flushed. I also find it helps my brain function better if I am not dehydrated.
I read an article (Web MD?) where it stated that the most effective way to prevent recurrence of kidney stone is to drink water - iirc it was 8 cups. There were also warning against eating too much - whatever too much is - spinach and rhubarb.